Sometimes we have to eat a bitter mistake and take away a lesson from that. It hurts, but sometimes that is the best course. Since the buyer doesn't seem to have pulled this before, it would be hard to conjecture that they have suddenly started to scam sellers.
So in the final analysis, a refund is probably in order. However, something like this may not have even been covered by insurance. When letting the buyer know that you will be refunding the purchase, ask them to retain all the packaging and contents for you, because you are turning this over to the Postal Inspection service.
They will be very interested in determining if they have a thief in their system, and will want to have all the evidence. Then get in touch with the USPS to turn this over to them for investigation. The buyer should be happy with the refund and willing to cooperate.
If they balk, that will signal to you that something is afoot with the buyer.
Yeah something like this actually just happened to me on ebay where I shipped out two very extremely expensive recorders out for 200 dollars and the guy definitely got them and I insured them and everything and then the guy turned around and said that he only got half an order and said that the boxes were tampered with and that another one was filled with packing peanuts (which was all around bull dinky) and I called ebay yesterday and the lady told me from ebay that she fully believed me and that it did seem fishy that the buyer lowered the prices to half the cut of what the machines were originally worth and then he turns around to try and get a refund after cutting the price on best offer even further. So people do lie and the only way to prove to ebay that you did in fact ship it out is to take the tracking number to your local post office when they are open and ask the post master to print out the more detailed version of your tracking information about how many parcels and so forth and upload the pictures to ebay seller dashboard in the open dispute and it should go swimmingly for you in your favor if you have that detailed proof trust me . And then on top of it that seller will be banned from ebay market place for fraudulent claims.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.